[clang-tidy][NFC] Fix modernize-use-using findings

Fix issues found by clang-tidy in clang-tidy source directory.

clang-tools-extra/clang-tidy/ClangTidy.cpp

@@ -349,7 +349,7 @@ setStaticAnalyzerCheckerOpts(const ClangTidyOptions &Opts,
   }
 }
 
-typedef std::vector<std::pair<std::string, bool>> CheckersList;
+using CheckersList = std::vector<std::pair<std::string, bool>>;
 
 static CheckersList getAnalyzerCheckersAndPackages(ClangTidyContext &Context,
                                                    bool IncludeExperimental) {

clang-tools-extra/clang-tidy/ClangTidyModule.h

@@ -70,7 +70,7 @@ class ClangTidyCheckFactories {
   std::vector<std::unique_ptr<ClangTidyCheck>>
   createChecksForLanguage(ClangTidyContext *Context) const;
 
-  typedef llvm::StringMap<CheckFactory> FactoryMap;
+  using FactoryMap = llvm::StringMap<CheckFactory>;
   FactoryMap::const_iterator begin() const { return Factories.begin(); }
   FactoryMap::const_iterator end() const { return Factories.end(); }
   bool empty() const { return Factories.empty(); }

clang-tools-extra/clang-tidy/ClangTidyModuleRegistry.h

@@ -14,7 +14,7 @@
 
 namespace clang::tidy {
 
-typedef llvm::Registry<ClangTidyModule> ClangTidyModuleRegistry;
+using ClangTidyModuleRegistry = llvm::Registry<ClangTidyModule>;
 
 } // namespace clang::tidy
 

clang-tools-extra/clang-tidy/ClangTidyOptions.h

@@ -30,7 +30,7 @@ struct FileFilter {
   std::string Name;
 
   /// LineRange is a pair<start, end> (inclusive).
-  typedef std::pair<unsigned, unsigned> LineRange;
+  using LineRange = std::pair<unsigned int, unsigned int>;
 
   /// A list of line ranges in this file, for which we show warnings.
   std::vector<LineRange> LineRanges;
@@ -118,13 +118,13 @@ struct ClangTidyOptions {
     /// files to disambiguate local vs global value from different levels.
     unsigned Priority = 0;
   };
-  typedef std::pair<std::string, std::string> StringPair;
-  typedef llvm::StringMap<ClangTidyValue> OptionMap;
+  using StringPair = std::pair<std::string, std::string>;
+  using OptionMap = llvm::StringMap<ClangTidyValue>;
 
   /// Key-value mapping used to store check-specific options.
   OptionMap CheckOptions;
 
-  typedef std::vector<std::string> ArgList;
+  using ArgList = std::vector<std::string>;
 
   /// Add extra compilation arguments to the end of the list.
   std::optional<ArgList> ExtraArgs;
@@ -165,7 +165,7 @@ class ClangTidyOptionsProvider {
   ///       commandline option is specified, clang-tidy will ignore the
   ///       configuration file.
   ///    * '-checks' commandline option.
-  typedef std::pair<ClangTidyOptions, std::string> OptionsSource;
+  using OptionsSource = std::pair<ClangTidyOptions, std::string>;
 
   /// Returns an ordered vector of OptionsSources, in order of increasing
   /// priority.
@@ -199,9 +199,7 @@ class FileOptionsBaseProvider : public DefaultOptionsProvider {
 protected:
   // A pair of configuration file base name and a function parsing
   // configuration from text in the corresponding format.
-  typedef std::pair<std::string, std::function<llvm::ErrorOr<ClangTidyOptions>(
-                                     llvm::MemoryBufferRef)>>
-      ConfigFileHandler;
+  using ConfigFileHandler = std::pair<std::string, std::function<llvm::ErrorOr<ClangTidyOptions> (llvm::MemoryBufferRef)>>;
 
   /// Configuration file handlers listed in the order of priority.
   ///
@@ -220,7 +218,7 @@ class FileOptionsBaseProvider : public DefaultOptionsProvider {
   ///
   /// With the order of handlers shown above, the ".my-tidy-config" file would
   /// take precedence over ".clang-tidy" if both reside in the same directory.
-  typedef std::vector<ConfigFileHandler> ConfigFileHandlers;
+  using ConfigFileHandlers = std::vector<ConfigFileHandler>;
 
   FileOptionsBaseProvider(ClangTidyGlobalOptions GlobalOptions,
                           ClangTidyOptions DefaultOptions,
@@ -232,7 +230,7 @@ class FileOptionsBaseProvider : public DefaultOptionsProvider {
                           ClangTidyOptions OverrideOptions,
                           ConfigFileHandlers ConfigHandlers);
 
-protected:
+ protected:
   void addRawFileOptions(llvm::StringRef AbsolutePath,
                          std::vector<OptionsSource> &CurOptions);
 

clang-tools-extra/clang-tidy/FileExtensionsSet.h

@@ -13,7 +13,7 @@
 #include "llvm/ADT/StringRef.h"
 
 namespace clang::tidy {
-typedef llvm::SmallSet<llvm::StringRef, 5> FileExtensionsSet;
+using FileExtensionsSet = llvm::SmallSet<llvm::StringRef, 5>;
 } // namespace clang::tidy
 
 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FILE_EXTENSIONS_SET_H

clang-tools-extra/clang-tidy/llvm/IncludeOrderCheck.cpp

@@ -40,7 +40,7 @@ class IncludeOrderPPCallbacks : public PPCallbacks {
     bool IsMainModule;     ///< true if this was the first include in a file
   };
 
-  typedef std::vector<IncludeDirective> FileIncludes;
+  using FileIncludes = std::vector<IncludeDirective>;
   std::map<clang::FileID, FileIncludes> IncludeDirectives;
   bool LookForMainModule;
 

clang-tools-extra/clang-tidy/modernize/LoopConvertUtils.h

@@ -32,24 +32,24 @@ enum LoopFixerKind {
 };
 
 /// A map used to walk the AST in reverse: maps child Stmt to parent Stmt.
-typedef llvm::DenseMap<const clang::Stmt *, const clang::Stmt *> StmtParentMap;
+using StmtParentMap = llvm::DenseMap<const clang::Stmt *, const clang::Stmt *>;
 
 /// A map used to walk the AST in reverse:
 ///  maps VarDecl to the to parent DeclStmt.
-typedef llvm::DenseMap<const clang::VarDecl *, const clang::DeclStmt *>
-    DeclParentMap;
+using DeclParentMap =
+    llvm::DenseMap<const clang::VarDecl *, const clang::DeclStmt *>;
 
 /// A map used to track which variables have been removed by a refactoring pass.
 /// It maps the parent ForStmt to the removed index variable's VarDecl.
-typedef llvm::DenseMap<const clang::ForStmt *, const clang::VarDecl *>
-    ReplacedVarsMap;
+using ReplacedVarsMap =
+    llvm::DenseMap<const clang::ForStmt *, const clang::VarDecl *>;
 
 /// A map used to remember the variable names generated in a Stmt
-typedef llvm::DenseMap<const clang::Stmt *, std::string>
-    StmtGeneratedVarNameMap;
+using StmtGeneratedVarNameMap =
+    llvm::DenseMap<const clang::Stmt *, std::string>;
 
 /// A vector used to store the AST subtrees of an Expr.
-typedef llvm::SmallVector<const clang::Expr *, 16> ComponentVector;
+using ComponentVector = llvm::SmallVector<const clang::Expr *, 16>;
 
 /// Class used build the reverse AST properties needed to detect
 /// name conflicts and free variables.
@@ -270,7 +270,7 @@ class Confidence {
 };
 
 // The main computational result of ForLoopIndexVisitor.
-typedef llvm::SmallVector<Usage, 8> UsageResult;
+using UsageResult = llvm::SmallVector<Usage, 8>;
 
 // General functions used by ForLoopIndexUseVisitor and LoopConvertCheck.
 const Expr *digThroughConstructorsConversions(const Expr *E);
@@ -339,7 +339,7 @@ class ForLoopIndexUseVisitor
 
 private:
   /// Typedef used in CRTP functions.
-  typedef RecursiveASTVisitor<ForLoopIndexUseVisitor> VisitorBase;
+  using VisitorBase = RecursiveASTVisitor<ForLoopIndexUseVisitor>;
   friend class RecursiveASTVisitor<ForLoopIndexUseVisitor>;
 
   /// Overriden methods for RecursiveASTVisitor's traversal.

clang-tools-extra/clang-tidy/utils/IncludeSorter.h

@@ -51,7 +51,7 @@ class IncludeSorter {
                                                   bool IsAngled);
 
 private:
-  typedef SmallVector<SourceRange, 1> SourceRangeVector;
+  using SourceRangeVector = SmallVector<SourceRange, 1>;
 
   const SourceManager *SourceMgr;
   const IncludeStyle Style;

clang-tools-extra/clang-tidy/utils/UsingInserter.h

@@ -37,7 +37,7 @@ class UsingInserter {
                                llvm::StringRef QualifiedName);
 
 private:
-  typedef std::pair<const FunctionDecl *, std::string> NameInFunction;
+  using NameInFunction = std::pair<const FunctionDecl *, std::string>;
   const SourceManager &SourceMgr;
   std::set<NameInFunction> AddedUsing;
 };